Fax to FSX port

Unanswered Question
Aug 4th, 2008
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I've sort of inherited a problem with a fax machine in Italy. It has never worked and I don't have access to the designer, I have just been asked to make it work. The following is the relevant config details, I can provide more info if required.

voice-port 0/0/0

output attenuation -6

echo-cancel coverage 32

echo-cancel erl worst-case 0

compand-type a-law

no comfort-noise

cptone IT

connection plar 1018

music-threshold -30

caller-id enable


dial-peer voice 1018 pots

description Fax number +39 nnn-nnn-nnn

information-type fax

incoming called-number nnnn

fax rate disable

supplementary-service pass-through


port 0/0/0

The fax doesn't work and to test it, I try calling the number from my London office, I expect to get the fax tone but just get the busy signal, any pointers would be gratefully received.


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Overall Rating: 4 (1 ratings)
Michael Hanes Tue, 08/05/2008 - 07:58
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  • Cisco Employee,

Hi Tim,

All fax calls start off as voice calls. In other words, you must be able to setup a basic VoIP call to this device before you can troubleshoot anything related to fax. If you are getting a busy signal then this is a VoIP connection problem. This can be cause by improper call routing or maybe the fax machine is just broken and stuck in an offhook state. The best way to troubleshoot this problem would be to have someone temporarily unplug the fax machine and plug in an analog phone. Then confirm that you can place a VoIP call to this analog phone and that the voice quality is satisfactory. Once you get calls working to the analog phone then plug the fax machine back in and you should hear fax tones.



NewBloke01 Tue, 08/05/2008 - 08:01
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Thanks David,

I will ask someone in Italy to plug in an analog phone. I will get back to you with the results



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